------------------------------------------------------------------------------ -- -- -- GNAT RUN-TIME COMPONENTS -- -- -- -- A D A . C A L E N D A R . T I M E _ Z O N E S -- -- -- -- B o d y -- -- -- -- Copyright (C) 2009, Free Software Foundation, Inc. -- -- -- -- GNAT is free software; you can redistribute it and/or modify it under -- -- terms of the GNU General Public License as published by the Free Soft- -- -- ware Foundation; either version 3, or (at your option) any later ver- -- -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- -- or FITNESS FOR A PARTICULAR PURPOSE. -- -- -- -- As a special exception under Section 7 of GPL version 3, you are granted -- -- additional permissions described in the GCC Runtime Library Exception, -- -- version 3.1, as published by the Free Software Foundation. -- -- -- -- You should have received a copy of the GNU General Public License and -- -- a copy of the GCC Runtime Library Exception along with this program; -- -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- -- . -- -- -- -- GNAT was originally developed by the GNAT team at New York University. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ package body Ada.Calendar.Time_Zones is -------------------------- -- Implementation Notes -- -------------------------- -- All operations in this package are target and time representation -- independent, thus only one source file is needed for multiple targets. --------------------- -- UTC_Time_Offset -- --------------------- function UTC_Time_Offset (Date : Time := Clock) return Time_Offset is Offset_L : constant Long_Integer := Time_Zones_Operations.UTC_Time_Offset (Date); Offset : Time_Offset; begin if Offset_L = Invalid_Time_Zone_Offset then raise Unknown_Zone_Error; end if; -- The offset returned by Time_Zones_Operations.UTC_Time_Offset is in -- seconds, the returned value needs to be in minutes. Offset := Time_Offset (Offset_L / 60); -- Validity checks if not Offset'Valid then raise Unknown_Zone_Error; end if; return Offset; end UTC_Time_Offset; end Ada.Calendar.Time_Zones;